Bridgeport Fittings 4457-DC Mi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$37.69
Bridgeport Fittings 4457-DC Mighty-Merge Zinc Die-Cast EMT to AC/FMC Transition Coupling, 1" to 3/8"

Bridgeport Fittings 4457-DC Mighty-Merge Zinc Die-Cast EMT to AC/FMC Transition Coupling, 1" to 3/8"

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Model: 4457-DC

In Stock (leaves warehouse same day if ordered before 3pm ET)

$37.69
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Bridgeport Fittings 4457-DC Mighty-Merge Zinc Die-Cast EMT to AC/FMC Transition Coupling, 1" to 3/8"

The Bridgeport Fittings 4457-DC Mighty-Merge coupling is a zinc die-cast transition fitting engineered to connect 1" EMT conduit to 3/8" AC or FMC cable in a single combination fitting. Designed for electricians who need a fast, dependable transition between rigid EMT conduit runs and flexible AC or FMC whips, this Mighty-Merge coupling merges multiple connection points into one compact zinc die-cast body. The 1" to 3/8" sizing lets contractors bridge conduit types on the same job without stacking extra couplings, reducers, or adapters, which streamlines panel, box, and enclosure hookups on commercial, industrial, and renovation projects where both EMT and flexible cable are present on the same run.

Key Features

  • Trade Size: Transitions 1" EMT conduit to 3/8" AC or FMC cable in a single fitting, eliminating the need for separate reducers.
  • Durable Construction: Zinc die-cast body provides long-lasting strength and stands up to repeated handling on active job sites.
  • Mighty-Merge Design: Combination-style coupling merges EMT-to-flex transitions into one quadruple-connection fitting, cutting part count and installation time.
  • Versatile Compatibility: Accepts 3/8" AC (armored cable) or FMC (flexible metal conduit) on the flex side, giving installers flexibility in cable selection.
  • Space-Saving Coupling: Quadruple AC/FMC connection points let installers land multiple flex runs from a single 1" EMT termination point, saving space inside boxes and enclosures.
  • Simplified Inventory: One Mighty-Merge fitting replaces multiple individual couplings and reducers, simplifying truck stock for electrical contractors.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Transitioning EMT Conduit Runs to AC or FMC Cable
  • Panelboard and Enclosure Wiring Connections
  • Commercial and Industrial Electrical Installations
  • Renovation and Retrofit Wiring Projects
  • Combining Multiple Flexible Conduit Whips at a Single EMT Termination
  • Consolidated Conduit-to-Cable Transitions in Junction Boxes

Why Bridgeport Fittings?

Bridgeport Fittings builds the 4457-DC Mighty-Merge coupling from zinc die-cast material for a rugged, long-lasting transition fitting that electricians can depend on in demanding EMT-to-flex applications. The combination design reduces the number of individual fittings needed on a job, saving installation time while keeping conduit-to-cable transitions secure and organized. For contractors who need a dependable way to move from 1" EMT conduit to 3/8" AC or FMC cable without a pile of extra couplings, the Mighty-Merge coupling delivers straightforward, space-saving performance backed by Bridgeport Fittings' durable zinc die-cast construction.

Manufacturer Resources

Product Specs

list_batch:
BPF-20260918
Product Type:
Combination Coupling
Series:
Mighty-Merge
Department:
Electrical
Product Subgroup:
Flexible Conduit & Fittings
Product Material:
Zinc Die-Cast
Product Size:
1"
Product Group:
Conduit & Raceway

Bridgeport Fittings 4457-DC – Frequently Asked Questions

1) What sizes does the Bridgeport 4457-DC Mighty-Merge coupling connect?
The 4457-DC transitions 1 inch EMT on one end to 3/8 inch AC (armored cable) or FMC (flexible metal conduit) on the flex side. It is a single fitting, so you don't stack a reducer and a separate flex connector to get from a 1 inch EMT run to a 3/8 inch whip.
2) Can I land more than one 3/8 inch flex whip on one EMT termination with this fitting?
Yes. The Mighty-Merge 4457-DC has quadruple AC/FMC connection points, so multiple 3/8 inch flex runs can leave a single 1 inch EMT termination. That is the main reason electricians use it inside crowded boxes and enclosures instead of running separate fittings for each whip.
3) Do I need a reducer or extra coupling to go from 1 inch EMT to 3/8 inch flex?
No. One 4457-DC does the whole transition. The point of the Mighty-Merge design is that the reducer and the flex connectors are built into one zinc die-cast body, so you carry one part instead of a coupling plus a reducer plus individual 3/8 inch flex connectors on the truck.
4) Is the 4457-DC right for a junction box where EMT and flex both terminate?
That is exactly its use case. It consolidates conduit-to-cable transitions at one point in a junction box, panelboard, or enclosure, which frees up knockouts and interior space compared with landing each 3/8 inch whip on its own connector.
5) What is the Bridgeport 4457-DC made of, and will it hold up in an industrial panel room?
Zinc die-cast throughout. That gives it enough strength for repeated handling on active job sites and for commercial, industrial, and retrofit panelboard and enclosure work, which is where these EMT-to-flex transitions usually land.
How fast can I get the Bridgeport Fittings 4457-DC delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bridgeport Fittings 4457-DC come with a warranty?
Absolutely. The Bridgeport Fittings 4457-DC is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bridgeport Fittings 4457-DC?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bridgeport Fittings 4457-DC from ZenSupply?
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